People spending any time outdoors should dress in layers and cover exposed skin. It’s about to get really, really cold.

Looking ahead, high temperatures across the Lower Peninsula will remain in the teens for the next week, meteorologists say.

Risky wind chills are affecting 18 states from Montana to NY, with reports of temperatures as cold as 50 degrees below zero in the Northern Plains.

In parts of CNY, the cold will be accompanied by heavy snowfall. The wind chill hit minus 8 – making it uncomfortable to stand outside. West wind 7 to 10 miles per hour. Overnight lows will be going down to near below zero with mostly clear skies. Wind chill values as low as -20.

Forty-nine percent of the country woke up to a a White Christmas on Monday morning, including much of Minnesota and west central Wisconsin. Chance of precipitation is 70 percent. South southeast wind 5 to 15 miles per hour. Wind becoming east 20 km/h near noon.

Looking ahead to the end of the week, NWS issued a second statement Tuesday morning that accumulating snow is possible Friday night into Saturday night.